When u are on a war-zone tourney u can pause it by pressing the "i" icon near the tourney name and changing it to pause,and again after it gets paused ,u can again start playing the tourney by pressing resume,also to know whether u are paused/alive,u just have to check the stats at that bar,its same as the box which appears on start of tourney.If no games are starting just refresh and u will be ok with that problem.